Doped sol-gel glasses as pH sensors

C. Rottman*, M. Ottolenghi, R. Zusman, O. Lev, M. Smith, G. Gong, M. L. Kagan, D. Avnir

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

114 Scopus citations


A series of pH indicators were trapped in sol-gel porous glasses by polymerization of tetramethoxysilane in the presence of a surface active agent. The properties of these novel sensing materials including spectral shifts, shifts in the pH-sensing range, cycle repeatability, leachability, rates of response and isosbestic points are described. A prototype of a pH meter based on a pH-sensing glass was constructed.

Original languageAmerican English
Pages (from-to)293-298
Number of pages6
JournalMaterials Letters
Issue number6
StatePublished - May 1992

Bibliographical note

Funding Information:
Supportedb y grants from the Israel National Council for R&D and KFK, Karlsruhe,G ermany; the US Army Research,D evelopmenta nd Stand-ardizationG roup (UK); theK rupp Foundationt; he SzaldF oundation.M O and DA are memberso f the L. Farkas (Minerva) Centerf or Light-EnergyC on-versiona nd acknowledgiets support.D A is a member of the F. Haber ResearchC enterf or Molecular Dynamics.


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